Zeolite kwayoyin sieves sun jawo hankali sosai a cikin 'yan shekarun nan a matsayin masu daidaitawa a cikin masana'antar filastik, irin su polyvinyl chloride (PVC) da polypropylene (PP). Yawancin lokaci ana amfani da su don hana halayen lalata da haɓaka yanayin zafi, don haka tsawaita rayuwar sabis.
PVC Zeolite Stabilizer
PVC a zahiri yana kula da zafi, rashin kwanciyar hankali na zafi, kuma yana da saurin lalacewa a yanayin zafi. Ana buƙatar masu daidaitawar thermal don hana lalacewa, canza launin, da asarar kayan aikin injiniya na kayan PVC.
PVC tana fitar da hydrogen chloride lokacin da aka fallasa shi zuwa zafi, wanda shine ainihin abin da ke haifar da PVC don yin duhu a launi da tabarbarewar aiki. Don haka masu kwantar da hankali na thermal suna da alhakin rashin daidaituwa na hydrogen chloride da hana lalata sarkar.
Sives na kwayoyin halitta na Zeolite suna da ikon ƙara hydrogen chloride, kuma suna iya aiki tare da haɗin gwiwa tare da alli ko zinc stabilizers don haɓaka cikakkiyar kwanciyar hankali na PVC, da kuma inganta yanayin canza launin farko da dogon lokaci{0} matsalolin tsufa na PVC.
PP Zeolite Stabilizer
PP yana da saukin kamuwa da iskar oxygen, fashewar thermal, ko photodegradation, don haka yana buƙatar ƙari na antioxidants da masu daidaita zafi. Musamman a cikin manyan batches da kayan da aka sake yin fa'ida, ƙazanta (ruwa, acid) zai haɓaka aikin lalata.
Zeolite kwayoyin sieves suna shayar da ruwa mai saura a cikin tsarin PP don inganta kwanciyar hankali na aiki, shafe ƙazantattun acidic irin su peroxides da kwayoyin acid don haɓaka kaddarorin antioxidant, kuma suna iya aiki tare da sauran abubuwan da ke tattare da su don toshe watsa zafi da oxygen, ta haka ne ya kara rayuwar sabis na PP.
Kamar yadda PP stabilizers ko fillers na PP composite, kwayoyin sieves ba su ƙaura ko volatilize, da kyau thermal kwanciyar hankali, kuma za a iya gauraye da inorganic fillers ko Additives don inganta aikin PP kayan.
Zeolite Molecular Sieves Don PVC/PP Stabilizers
Zeolite kwayoyin sieves da za a iya amfani da su ga PVC/PP stabilizers sun hada da nau'in A, P, X da Y. Duk da haka, rubuta A kwayoyin sieve (misali . 4A zeolite foda) ya fi dacewa saboda amfani da tasiri da farashi{3} tasiri.
Nau'in 3A zeolite molecular sieve: Ana amfani dashi sau da yawa azaman desiccants don ɗaukar danshi a cikin tsarin PVC ko PP. Hakanan yana da wani tasiri akan ɗaukar acid ɗin kyauta (kamar gano acid ɗin da aka samar ta hanyar lalata oxidative) a cikin tsarin PP.
Nau'in 4A zeolite molecular sieve: A cikin PVC stabilizers, yana ɗaukar ƙananan kwayoyin halitta na hydrogen chloride, yana hana lalata halayen da inganta yanayin zafi. A cikin PP stabilizers, yana shayar da danshi da ƙazantattun acidic, yana haɓaka kwanciyar hankali na aiki da rage yawan lalacewa.
Nau'in 5A zeolite molecular sieve: Yana sha hydrogen chloride da ƙazanta kwayoyin da aka saki yayin aiki na PVC, kuma ana amfani dashi da yawa don inganta ƙarfin adsorption da juriya na zafin jiki.
Nau'in 13X zeolite molecular sieve: Yana da mafi girman ƙarfin adsorption kuma yana iya ɗaukar hydrogen chloride, sulfur dioxide, da sauran iskar acidic. Ana amfani da shi gabaɗaya a takamaiman tsarin ƙari na PVC ko azaman mai haɗakarwa mai daidaitawa.